Question about Water Heaters
My boiler Heatline Vizo24 lights up,stays on for 1 minute then cutts out for few minutes and so on. some radiators remain cold,others are luke warm and the water is luke warm too. the system has been cleaned with x400 twice in last 2 months. while its lit, the red lights all light up in turn and when it gets to end, lights go out one by one until it gets to ''Bar pressure'' light and then it cuts out.Pressure display shows no drops.
You could check the flame sensor is clean and the connections are tight . check the pressure switch as well. also get the over heat could be shutting off too soon ,
Check the rads for air lock ,
Posted on May 12, 2017
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Posted on Jan 02, 2017
SOURCE: boiler overheating
the problem there a relay stuck or thermostat bring on the pump & you can lower your high limit aquastat!! also the flow valves can bypass hot hot water risers time to put in a seperate water heater domestic coil are not energy efficient !!!! aquastat high limit set @ 180f deg low limit set @ 140f deg!!!
good luck!!! tim
Posted on Oct 18, 2008
u need to have a key (its like a T shape key) and u put that under the boiler its a hole in there, than u open the tap which is near this hole.
Posted on Oct 31, 2008
SOURCE: heating pressure gauge goes up
there should be a pressure rellief valve fitted.
it also sounds like the heat exchanger is blocked if the hot water is not as good as it used to be and the boiler reaches temperature too quickly then there is scale in the heat exchanger and needs to be cleaned or replaced
Posted on Mar 30, 2009
SOURCE: hot water
there are two main faults with combi boilers not giving hot water. one is a faulty flow sensor, the other is the most common which is a blocked heat exchanger caused by debris and scale in the system. this needs to be flushed out or may require a new heat exchanger depending on the age and condition of the boiler some plumbers may suggest a new boiler.
Posted on Mar 30, 2009
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